Halton THL, manually operated

Changing manually the front disk position the throw pattern can be adjusted from radial to compact.

Halton THL with wax-bulb actuator

Sizes 250, 315 and 400 can be equipped with a wax-bulb actuator, which work without any power supply. The front disk position changes according to the temperature of supply air. The temperature range of the wax-bulb actuator is about 20 °C to 27 °C.

The time taken to change from radial to compact jet (or the other way around) is 10 - 20 minutes. When warm air is supplied the piston of the wax bulb actuator keeps moving until the THL supply air pattern is vertical. When cold air is supplied, the Halton THL supply air pattern is changed back to horizontal by means of a spring.

The Halton THL is a ceiling diffuser with an adjustable low pattern. The horisontal radial jet is used mainly in cooling applications and the vertical compact jet with warm supply air in heating applications.

The supply air pattern can be adjusted by rotating the front disk into the desired position. The recommended maximum temperature difference in cooling applications between supply and room air temperature is 10 °C.

The diffuser is connected either directly to the duct by screwing or riveting or alternatively to the Halton TRI balancing plenum.

The minimum recommended safety distance upstream of the diffuser is 3xD.

Installation with Halton TRI

The collar of Halton TRI plenum can be installed either internally in the plenum or externally onto the bottom of the plenum. The height of the unit for the external installation is presented in the table below. When the collar is installed internally, the total height H3 is reduced by 60 mm.

In order to enable airflow adjustment and measurement of airflow rate it is recommended that the diffuser be connected to the TRI balancing plenum. The supply airflow rate is determined by using the measurement and adjustment module MSM.

Detach the front disk or the whole diffuser and pass the tubes and control spindle through the side slot of the diffuser. Replace the front disk or diffuser. Measure the differential pressure using a manometer. The airflow rate is calculated using the formula below.

Adjust the airflow rate by rotating the control spindle until the desired setting is achieved. Lock the damper position with a screw. Replace the tubes and spindle into the plenum.

The k-factor for installations with different safety distances (D= duct diameter)

TRI

> 8 x D

min 3 x D

100

6.0

7.5

125

9.9

12.6

160

16.9

21.9

200

28.3

31.0

250

47.9

51.5

315

78.6

-

The technical performance has been defined for radial and compact jet with the fixed cone module openings. The adjustment positions used are detailed in the table below.

Halton is passionate about indoor environments. We offer business-enhancing products, systems, and services for comfortable, energy-efficient, and safe environments to customers who value people's wellbeing. Halton is involved from target-setting to facility use and focuses on creating positive indoor environment experiences for people.